Rotary engine



May 22,1923. I 1,456,232

A. E. GREENE ROTARY ENGINE Filed April 17 1919 5 Sheets-Sheet 1 May 22, 1923. 1,456,232

, A. E. GREENE ROTARY ENGINE Filed April 17, 1919 5 Sheets-Sheet 2 M565 flmkpse rec-21c,

May 22, 1923. I

1,456,232 A. E. GREENE ROTARY ENGIN/E Filed April 17, 1919 5 Sheets-Sheet 5 A. E. GREENE ROTARY ENGINE Filed April 17 1919 5 Sheets-Sheet .4

@Wga flzzbkose Z? Greene, I

ROTARY ENGINE Filed April 17, 1919 5 Sheets-Sheet 5 film 9 244 Patented May 22, 1923. I MSMEZ UNITED STATES PATENT FFEQE. I

AMBROSE EVERTS GREENE, F CORNING, CALIFGRNIA.

ROTARY ENGINE.

Application filed April 17, 1919. Serial No. 290,811.

Z '0 all whom. it may concern: lar frame 8, see Fig. 1, mounted on support- Be it known that I, AMBRosn E. GREENE, ing legs 9. It will be apparent, however. citizen of the United States, residin at that the form of the frame and its supports. Corning, in the county of Tehama and S tate may be varied, as desired. On the two lonof California, have invented certain new gitudinal sides of the frame 8 I provide and useful Improvements in Rotary Enbearing blocks lO in which is journaled a gines, of which the following is a specificashaft 11. Then so desired, ball-bearings l2 U 1, Y may be provided between the bearing-blocks My invention relates to rotary engines, 10 and the shaft 11, see Fig.5. The bearing 10 and the like, and has for one of its objects blocks 10 may be secured to the frame 8 in the provision of a simple and efficient enany desirable manner, such as by bolts 13, ins or th like, or the bearing blocks and the frame may be A further object is the provision of a enformed in any other desirable manner. 7 gine, or the like, as mentioned, in which I provide cylinders and pistons to operate 15 friction and vibrations are reduced to a in the cylinders, with the pistons and cylminimum. inders adapted to rotate about the axis of A further object is the provision of a roshaft 11. I preferably mount the cylinders tary engine, or the like, in which the charges in such a manner that they rotate with the are compressed in the engine cylinders .in shaft, and the pistons have an oscillatory 20 hi h they are to be fired. movement with respect to the cylinders, but

A further object is the provision of a this arrangement may be varied by causing rotary engine, or the like, in which a. rothe pistons to move with the shaft, and the tative balance is had at all speeds. cylinders to oscillate with respect to the pis- A. still further object is the provision of tons. Secured to the shaft I have illustrated 35 an engine, or the like, such as mentioned, in a central hollow block member 14 which may which the movement of the pistons in their be secured to the shaft 11 in any desirabl cylinders causes rotary movements of the manner, such as bya key 15, see Fig. 5. The pistons and cylinders about a common axis. hollow block member 14 is preferably pro- Other objects will appear hereinafter. vided with a plate 16 which closes the open 30 An embodiment of my invention is illus side thereof. The plate16 also is preferably trated in the accompanying drawings, formsecured to the shaft, as by a key 15. The holing a part of this specification, and in low part 14 is provided with cylinder heads which- 17 which extend radially therefrom and pro- Fig. 1 is a plan view of a rotary engine vide supporting means for a plurality of embodying my invention; cylinders. In the form of the invention Fig. 2 is a side elevation of the same; shown, I have illustrated four cylinders 19, Figs. 3 and 1 are sections taken on lines 20, 21 and 22 which may be secured to the 3-3 and -:l4i, respectively, of Fig. 1; heads 17 in any desirable manner, such as Fig. 5 is a section taken substantially on by screws 23. i -10 line 5-5 of Fig. 4:; and Extending through the hollow member 14- Fig. 6 is a detail illustrating a modified is a lever 24: whichis journaled on the shaft form of cam used in the construction. 11 and extends through openings 25 in the In the drawings I have illustrated an inperiphery of the member 14 between the free ternal combustion engine to show the apends of the cylinders. Ateach end of the 45 plication of my invention. By a slight lever 24 is an arcuate head 26. "At one end modification, as hereinafter described, the of the lever 24 is a radial extension 27, and construction may be used as a steam or other at the other end of the lever 24 is ,a counterfluid under pressure engine. Weight, 28.

Referring more particularly to the draw- The heads 26 carry pistons 29, 30, 31 and so ings, I have shown a substantially rectangu- 32 which are adapted to oscillate in the cylinders 19', 20, 2-1 and 2:2, respectively. With this arrangement the cylinders are secured to the shaft to rotate therewith, and the pistons mounted to oscillate in the cylinders on the shaft 11. Each of the pistons is provided with packing rings 33. The front and rear edges of said packing rings lie in substantially radial planes from the axis of the shaft. 11. This arrangement provides'a piston ring which is narrower at its side next to the shaft 11, and wider at its side away from said shaft. These rings it in grooves in the pistons of similar shapes so that the rings are held against crawling around the pistons. It will be apparent from this construction that, since the pistons are mounted on members 24 and "26 in a manner to travel in a circle about the axis of shaft 11, and the cylinders having their central lines in a circle about the axis of said shaft, there will be practically no lashing of the'pistons against the sides of the cylinders in their operation. Practically the only friction between the cylinders and pistons will be the friction of the rings 33 on the walls of the cylinders.

The pistons may be lubricated in the cylinders in'any desirable manner. As an effective and simple means I preferably provide an opening 34 in the shaft 11, see Fig.

which communicates with radial openings 35, Fig. 4, which extend from the opening 34 out through the shaft 11 and lever 24 to the heads 26 and connects with openings 36 in said heads. The openings or channels 36 extend into the pistons, and thence radially of the pistons through openings 37. As many openings 37 may be provided in the pistons as desired. With such equivalent, when so desired.

a construction the oil is fed into the end of shaft 11 where it finds its way through the passage 34 to passages 35 and by centrifugal force thrown. out to the passages 36 where it finds its way through the latter passages through the openings 37 where the oil comes in contact with the cylinder walls to lubricate the pistons in the cylinders.

To the hollow member 141 preferably secure a. lever 38, securing it by suitable means,such as rivets 39. It will he apparent, however, that the lever 38 may be attached to the member 14 in any other desirable manner.- 'One end of the lever 38 is provided with a counterweight- 40.

Eccentrically to the shaft 11 I provide a lever or walking beam 41. This walking beam is preferably provided with a large opening at its center so that it may pass freely around the shaft 11 in its eccentric relation to the latter. The lever 41 is 'iou'rnaled on the bearing block 10 and may be provided with ball-bearings 42, or their I preferably use two of the walking beams or levers 41, substantially as indicated in Fig. 5; and connect the ends thereof together by shafts 43. The shafts 43, 43 are then connected by means of links 44, 44 with shafts 46 and 45. The shaft is mounted in one end of lever 38, and the shaft is mounted in one end of lever 27. Each of the links 44, 44" is preferably provided with a coun-' terweight 48, the counterweights 48 being arranged so that they counterbalance the links 44, and the counterweights 28 and 40 being arranged with relation to the coun terweights 48 so that the whole structureis substantially accurately balanced.

A fuel int-alrepipe 49 is fitted in an opening 50 in one of the bearing blocks 10, see Fig. 5. A plate 51 is secured to said hearing block 10 and provided with an opening 52- therein registering with the opening 50. A assage 53 leads frointhe hub-portion of block 14 substantially radially out into each of the heads 17 and terminates in chambers 54 and Opening from the chamber 54 are two valves 56 and 57 which control the passage'of fuel from the chamber 54 into the compression space 58'0f cylinder 19, and compression space 59 of cylinder 20. The chamber opens through valves 60 and 61 into compression'space 62 of cylinder 21, and compression space 63 of cylinder 22. Each of the valves 56, 57, 60 and 61 is operated by a tappet'64 which is mounted on a pin 65 carried in the block 14. Each tappet 64 carries a roller seat one end which cooperates with a' cam shaft 67. The cam shafts 67 are mounted in the members 14 and 16 and actuated by gears 68 on the outside of member 16. Each cam shaft 67 has a cam 69 adaptedto control said valves 56, 57, 60 and 61.

are shown inFig. the other exhaust valves Each of the compression spaces 58, 59, 62 and 63,0pens' through an exhaust valve 70, two ofwhich being hidden or cut away in all of'the views. municates with exhaust chambers '71-, see Fig. 5. I have shown the exhaust chambers 71 as opening directly into the atmosphere, but it will be understood that when it is desired, passages corresponding to passages 53, 52 and 50 may -be provided to conduct the exhaust gases out through the block 10 opposite to the one whichconducts the fuel into the engine. Each of the valves 70 is operated by a tappet "2 '(similar to the tappets 64) which cooperates w1th a cam 73 on one of the cam shafts 67.

The gears 68 mesh with a pinion 74 which is preferably secured to one of the bear- Each of the exhaust valves com-.

ing blockslO and adapted to permit shaft.

11 to rotate in it. Since the pinion 74 is held stationary and the gears revolve about it. rotation will be given to said gears 68, causing rotation" of'the cam shafts.

A spark plug has its sparlcproducing end reaching into each of the compression chamhers 58, 59, 62 and 63. The spark plugs are connected to brushes 76 by suitable wir-' ing 77, seev Fig. 2. In the present invention I preferably connect the spark plugs which communicate with chambers 58 and 62 with one brush '26, and the other two spark plugs with the other brush 76 so that explosions occur simultaneously in cylinders l tland 21, and explosions occur simultaneously in cylinders 20 and The brushes 76 engage with contactors 78 and T8, and the latter are connected by means of suitable wires 82 and 82 with points 80 and 79, respectively, of a distributor. A suitable source of power, such as an electric battery 81,is connected to the connection 81 of the distributor, the other side of the battery 81 being connected to the frame to complete the circuit. A pinion 83 is mounted on the shaft 11 and meshes with a gear 84 on the distributor to cause operation of the latter.

The cams on the cam shafts 67 and other parts of the engine are so arranged that charges will be introduced into the cylinders 19 and 20 simultaneously, and in the cylinders 20 and 22 simultaneously. This arrangement provides a construction in which explosions take place at diametrically opposite sides of the shaft at the same time, thereby reducing strains and vibrations in the engine to a minimum.

The taking of fuel into the cylinders,

compressing such fuel, firing the charge,

and exhausting the burnt gases are all accomplished in this engine in substantially the same manner as in the ordinary fourstrolre cycle internal combustion engine. The pistons oscillate in their respective cylinders because the cylinders are connected to one end of the lever 41, and the pistons are connected to the other'end of such lever 41, and the latter mounted eccentric-ally to the axis of the pistons and cylinders. This arrangement causes each piston to move from one end of the cylinder to the other, and back to the place of beginning during each complete revolution of the shaft 11. and lever tl.

A. charge is fired in each of the cylinders in substantially the same manner; therefore, in following the operation in one cylinder, the operation of all of them will be apparent. In the movement of lever 11 through a half circle, cam 69 will raise valve 57 to permit the movement of piston 29 to draw in a charge of fuel, and bring the piston 29to the opposite end of cylinder 19. In this movement of lever 41, levers 24 and 38 will be rotated until each takes the place of the other lever. Then upon rotating the lever 41 through another half circle to the position shown in. Fig. a, the piston 29 will be brought to its position shown in .Fig. 4-, compressing the fuel ready for firing. Le-

other half circle, the charge will befired vers and 38 will. also be brought to their positions indicated in this figure. Then upon rotationof the lever 41 through an:

and upon completion of this revolution of the lever 4.1, exhaust valve will be opened scavenging said-cylinder and bringing-the parts to the position shown in Fig..-at ready for a new cycle. During the working stroke pressure was applied'to the adjacent sides of piston 29 and cylinderihead 17in sub- .stantiallyequal pressures; These pressures were transmitted through levers 38 and 2 1 to opposite ends of lever 41 causing equal forces to be applied to said lever 41. Due. to the lever 41 being mounted eccentricallyto shaft 11 and the particular part ofthe revo-' lution of the parts through which the latter were passing when the explosion occurred, greater leverage is applied to the end of" lever etl which is connected with the cylinder head 17, therefore, the engine is causedto rotate in a clockwise direction; Theparts are so timed that the charges are fired in cylinders20 and 22 when the engine is in .a

part of its revolution where greater leverageis producedon the end of leverel connected with pistons 30 and 32, thereby causing another impulse also. ina clockwise; direction in the engine. It .will. therefore be seen that due to-the particular arran ement of the parts the explosions in cylinders 19 and 21 cause an impulsein a clockwise direction, and the explosionsin cylinders 20 and. 22 cause another impulse in a clockwise direction.

It is found that byslight alteration the device is adapted to use compressed air or steam as a motive power. The onlyichanges necessary is to make gears 6.8 and- .74; of equal sizes so that cam shafts 67 rotate in a relation to shaft 11 of one to one, 1 Also,

to changethe cams 69 and 73, substantially as indicated in F igr .6, so that the intake valves will be openthroughout the greater portion of the first half of the revolutionof the engine, and the exhaust valves open .through most of the remaining half of a revolution of tlie engine. It willthus be seen that in using steam or othercompressed fluidthat the engine operatesin a two stroke cycle. Then the device is-arranged as ust mentioned. power may be applied to shaft 11. and the device used as a pump, or compressor.

It should 20, 21 and 22 are rigidly connected together and are rigidly connected to the frame 14c, 16 shown in Fig. 5 and this frame is :keyed at 15, 15 to the. shaft 11 to which power is transmitted by the rotation of. the structure comprising the four. cylinders. It. should also be noted that the four pistons are rigid l'y connected together by being rigidly/connected to the frame 2-1- which. is connected be noted that the ynnaefs 1 9,

shownin Fig. 5.

circle above the axis of the shaftvll"; fore, as the walking beams rotate around to the sleeve mounted loosely on the shaft 11, as shown in Fig. 5. The frame 2a together with the pistons aremounted on the shaft 11 concentrically with the framework which includes the cylinders. Although the supplemental frame 24 is located be- I tween the ends of the cylindrical main frame there are arcuate spaces provided for arcuate movement of the pistons along the cylinders and arcuate movement of the frame 24 relatively to the cylindrical frame. The angular spaces in the mainframe are clearly shown in Fig. et'at the right and left hand portions thereof. The walking beam frame comprising a pair of spaced-apart walking beams are mounted at both sides of the main frame, as Spaced-apart eccentric cams are mounte opposite sides of the cylinder framework. It will 'be seen by referring to Fi 5, that these eccentric cams are rigidly connected to the stationary frame 8 and in end-view each is circular, as shown in dotted lines in Fig. i, with the center. of the Therethe'stationary eccentric cams, the spacedapart straps of the walkingbeams engage through ball bearings diametrically opposite points of the circular eccentrically mounted stationary actuating deviceslO, 10. The rotary frame 24; which is mounted loosely on the shaft 11 is connected by the links 44 to the pair of walking beams 41 which are mounted to rotate freely about the journal bearings 10, 10 on an axis spaced above the axis of the shaft 11. a

With the foregoing explanation as to the relation of the parts of my improved rotary internal combustion engine, "the operation can be readily understood.

Assuming that it is desired to operate the shaft 11 in a clockwise direction, as viewed in Fig. 4:, while the cylinders are moving clockwise the explosive'mixture is being introduced into the cylinders19 and 21' and mixtures in the cylinders 20 and '22 are being com-' pressed. Then while the mixture in the cylinders 19 and 21 are being put under compression, the mixtures in the cylinders 20 and 22 are being fired. During the next step the mixtures in the cylinders 19 and seen that 'when'the firing occurs, there will inclined" towards this i radial line.

thus be-seen that the force exertedv bythe' -cylinders through the link 44: will be benconsiderable pressure. exerted onthe bottoms of the cylinders19 and Ql -aga-inst the resistance offered by thepistons 29 and 31, to rotate the. shaft 11 in a clockwise direction; The pistons 29 and 31 are connected -to the frame 2 which is loosely mounted on the shaft 11 and it is' therefore necessary to consider how the. resistance against movement of the pistons is secured. When the explosions in the-cylinders 19 and 21-0ccur the tendency is forthe frame 2st to be moved anticlockwise:

By referring to F ig; at it will be. seen that thelink L4 occupies a position nearlyperpendicular to a line-extending. through the" axis of the shaft HR-the center about which the walking beam tlrotates and the axis of the shaft i3. The link a l, however, is more It can greater than the force exertedbyfthe pistons actingthrough the link 44.. on the other end of the walking beam il'; The force exerted "along thelink'dd might be resolved into'tfwo component forces,- one acting radially from the center onwhichthe ,walking'beam 11 rotates, and the other acting at rightangles to the radial line extending through the axes d3, 43' and the center of the cam disc/ As the cylinders-rotate clockwise the pivotal axis 13 will gradually approach'closer to the axis of'the shaft 11. while the pivotal axis at?) will gradually occupy a position farther away from the axisof the shaft'll' but .as-t-his occurs the link ettlmust become more and more inclined towardthe radial line through the pivotal axis 43, 4:3 and the center of the disc, because'the pivotal axis 46 always remains at the same distance from the axis of the shaft 11v while the pivotal axis 43 becomes more distant from the axis of the shaft 11. This can readily be seen by referring to the dotted circle in Fig. 4

which shows that the center thereof isspaced above the axis of the shaft 11. At the same time that the pivotal axis iti moves farther away from the-axis of the shaft.- 11, the axis 43 is moving closer to the shaft ll while the axis 4E5 remains constantly at the same distance on account of the lever 38 being riveted to. thefra-me carrying the arcuate cylinders. The swing of the link 44'. istoward a vertical position relative to the radial line through the axes 48 and 43' and beyond.

but the inclination relative to the said radial line is not as great as that of the link 44. The resultant of the various forces acting effects a preponderancetoward rotating the cylinder structure clockwise. This operation may also be explained by the fact :that

since the axis of the-walking beam is spaced above. the axis of the driving shaft, of the engine the effective leverage graduallvbecomes shorter as the cylinders rotate cloclc wise from the position shown in Fig. l. The effective leverage tending to turn the walking beam 4'1 anti-clockwise, is the dis tance from the center of the cam disc to the intersection of the radial line through the center of such disc and the axis as, and a line drawn from the axis 46 perpendicular to such radial line. Since the axis 43 moves outwardly relativelyto the axis 46,

this leverage gradually becomes shorter. At the start, where the parts are related, as shown in Fig. 4, this leverage is less on the left hand side than on the right hand side. On the right hand side the link ll swings toward the right. .This will effect an in crease of the leverage as determined by a line drawn from the axis 45 perpendicular to the radial line through the center of the disc and the axis 43. That is to say, the dis tance between the intersection of such perpendicular line and the radial line from the axis of movement of the walking beam grad-' nally increases as the cylinders rotate. The various parts of the multiple rotary internal combustion engine are. so related to each other, that whenever explosions in the cylinders take place, the resultant of the forces will act to continue to rotate the cylindrical structure and the shaft 11 in a clockwise direction.

Obviously those skilled in the art may make various changes in details and arrangements of parts without departing from the spirit and scope of my invention as defined by the claims here appended, and I wish, therefore, not to be restricted to the exact construction herein disclosed,

I claim:

1.. In combination, a shaft; a member fixed on said shaft; cylinder heads on opposite sides of said member; an engine cylin- (ler attached to each cylinder head; a lever pivoted on said shaft; pistons carried on said lever and disposed in said cylinders; a lever mounted eccentrically to said shaft; conecting links .conecting the last-mentioned lever with the first-mentioned lever and said member adapted to efiect relative oscillatory movements between the cylinder heads and pistons; and counterweights on said links. member and first-mentioned lever.

2. In combination, a shaft; a member fixed on said shaft; cylinders attached to said member; a lever pivoted on said shaft; pistons attached to said lever and disposed in said cylinders; a lever pivoted eccentrically to said shaft; connecting links connecting said lever together; and counterweights on said links.

3. In a rotary engine, the combination with a rotary shaft, of a cylinder and its cylinder head located concentrically of said shaft, a piston mounted upon said shaft, a pair of interconnected stationary discs with their centers located eccentrically of the .of said shaft, and means comprising oscillating links connected between saidv discs and said piston and between said discs and said shaft to effect the rotation of "the latter for an operation of the source of power within said cylinder against the piston and the cylinder head.

4. In a rotary engine, the combination with a plurality ofconcentrically mounted rotary elements, of mechanism for alternately accelerating and retarding the respective angular velocities of the rotary elements during each complete rotation, said mechanism comp-rising a pair of stationary discs in spaced-apart vertical planes at opposite sides of said elements having an axis of rotation eccentric of the axis of rotation of said rotary elements, a pair of spacedapart walking beams mounted respectively on said discs to have an axisof rotation eccentric of the axis of rotation of said rotary elements, means for connecting the outer ends of the walking beams, and oscillating links between said connecting means and said rotary elements.

5. In a rotary engine, the combination with a stationary supporting frame, of a roary shaft mounted thereon, spaced-apart discs secured to said supporting frame with their centers in alinement and spaced from said shaft, a rotary frame mounted on said' shaft, a plurality of tubular members in arcuate ahnement and comprising arcuate tubular expansion chambers mounted on said rotary frame concentrically of saidshaft, a plurality of pistons, one in each of said tubular members, a piston frame mounted loosely on said shaft for movement'of said pistons ,arcuately concentrically of saidsliaft, spaced-apart rotary frames mounted on said discs, means for connecting said spaced-apart rotary frames to rotate together on the center of said discs eccentrically of the axis of said shaft, link structure connecting said piston frame to one end of each of said spaced-apart frames .on said discs, and additional link structure between said rotary frames and the other ends of said spaced-apart frames on said discs.

6. In a rotary internal combustion engine, the combination with a supporting frame, of a shaft mounted thereon, a rotary frame connected to said shaft to rotate therewith, a plurality of tubular members on-said rotary frame each having an arcuate combustion chamber concentric of said shaft, a plurality of pistons one movable arcuately in each of said tubular members, a piston frame mounted loosely on said shaft and rigidly connecting together said pistons for movement concentrically of said shaft along said combustion chambers, circularcam structure mounted. on said supporting frame eccentrically of said shaft,

framework rotatable about said cam str-uc-.

tul and link structure connecting diametri- I cally opposite portions of said framework respectively to said rotary frame and to said pistonframe to effect rotation of said shaft upon the operation of the source of power in said tubular members acting on the heads of the latter and'on said pistons at predetermined intervals.

7. In -a rotary internal combustion engine, the combination with a supporting frame, of a shaft mounted thereon, a rotary frame mounted on said shaft to rotate therewith relatively to said supporting frame, four tubular members mounted on said rotary frame with tubular arcuate combustionchambers arranged concentrically of said shaft and in circular alinement, four pistons one for each of said combustion chambers, a piston frame mounted loosely on said shaft and rigidly connecting said pistons between the tubular members at diametrically opposite portions of said rotary frame, cam structure secured to said supporting frame eccentrically of said shaft, framework mounted on said cam structure for rotation about the same, link mechanism pivotally connected between said piston frame and one side of said framework, and additional link mechanism connected between said rotary frame and the diametrically opposite side of said framework relative to said cam structure.

8. In a rotary engine, the combination with a supporting frame, of a shaft mounted thereon, a rotary frame mounted on said .cylinder mounted on the shaft; a piston mounted in the shaft and adapted to oscillate in the cylinder; a lever pivoted on the periphery of the disc; a connection between one end of said lever and the piston; and a connection between the other end of said lever and the cylinder.

10. In combination a frame; a disc mounted on the frame; a shaft journaled in the disc eccentrically to the center thereof; a cylinder mounted on the shaft; a piston mounted in the shaft and adapted to oscillate in the cylinder; a lever pivoted on the periphery of the disc; a connection between one end of said lever and the piston; a. connection between the other end of said lever and the cylinder; and a fuel supply pipe attached to the disc adjacent the shaft, there being a fuel passage extending from said pipe to the interior of the cylinder.

11. An engine comprising a shaft; a frame fixed on said shaft; cylinders carried by said frame and having their center lines concentric with said shaft; a counterweight on said frame; a lever mounted on said shaft; pistons attac-hed'to said lever and disposed within said cylinder; at counterweight on the lever; and an operative connection between the frame of said cylinders and the lever of said pistons controlling relative movements of the pistons and cylinders.

12. In combination, spaced discs; a shaft 'journaled eccentrically in said. discs; levers pivoted on the peripheries of said discs; a member fixed on said shaft; cylinders at tached to said member; a lever pivoted on said shafts; pistons attached to the lastinentioned lever and disposed in said C571. inders; and links connecting the levers together.

13. In combination, a frame; spacedapart discs mounted on the frame; a shaft journaled' eccentrically to said discs; a 1'0".

tar r en lne mounted on said shaft between said discs; a fuel supply pipe connected with one of said discs and communicating with the interior of the rotary engine; and means attached to one of said discs and con nected with the engine for controlling the operation of the latter.

14. In combination, a frame; a shaft journaled in the frame; a cylinder fixed on said shaft and having its center line concentric with the axis of said shaft; a lever'journaled' on said shaft; a piston on said lever disposed within said cylinder; counterweights associated with said lever and said cylinder, said counterweights being on opposite sides of said shaft; a lever mounted eccentrically to said shaft; aconnecting link connecting one end of the last-mentioned lever with the lever journaled on said shaft; a counterweight on said connecting link; a connecting linlrconnecting the other end of said lever mounted eccentrically to said shaft and said cylinder; and a counterweight on the last-mentioned connecting link.

15. The combination with a stationary frame, of spaced-apart discs secured there to, a shaft'eccentric of said discs, a rotary engine mounted on said shaft between said discs, and means mounted on said discs and connected to said engine for controlling the operation of the latter.

16. The combination with a. stationary frame, of a plurality of discs secured thereto, a shafteccentric of said discs,a rotary engine mounted on said shaft and means on said discs and connected to said engine for controlling the transmission of power in the latter during the operation thereof.

17. The combination with a stationary last-named frames and said rotary engine sup-porting frame, of spaced-apart discs sefor controlling the transmission of power cured thereto, ashaft eccentric of said discs, in said engine.

a rotary engine on said shaft, a pair of In testimony whereof I have signed my 5 frames one on each of said discs and (321- name to this specification on this eleventh tending in opposite directions therefrom, day of April A. D. 1919.

and connections between the ends of said AMBROSE EVERTS GREENE. 

